// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 15.2.3.4-4-b-4
description: >
    Object.getOwnPropertyNames - elements of the returned array are
    writable
---*/

function Test() {
    var obj = {
      "a": "a"
    };

    var result = Object.getOwnPropertyNames(obj);

    var beforeOverride = (result[0] === "a");
    result[0] = "b";
    var afterOverride = (result[0] === "b");

    assert(beforeOverride, 'beforeOverride !== true');
    assert(afterOverride, 'afterOverride !== true');
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
